OSCE monitors working in Ukraine have reported that three mass graves were discovered outside of the city of Donetsk, the OSCE said in a report, which was published on its website on Wednesday - READ MORE br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.